package com.heima.search.service.impl;

import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.common.enums.AppHttpCodeEnum;
import com.heima.search.pojos.ApAssociateWords;
import com.heima.search.pojos.dtos.UserSearchDto;
import com.heima.search.service.ApAssociateWordsService;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.data.mongodb.core.query.Criteria;
import org.springframework.data.mongodb.core.query.Query;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class ApAssociateWordsServiceImpl implements ApAssociateWordsService {

    @Autowired
    private MongoTemplate template;
    /**
     联想词
     @param dto
     @return
     */
    @Override
    public ResponseResult search(UserSearchDto dto) {
        //校验参数
        if (dto==null|| StringUtils.isBlank(dto.getSearchWords())){
            return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
        }
        //分页检查
        if (dto.getPageSize()>20){
            dto.setPageSize(20);
        }
        //执行查询，模糊查询
        Query query=Query.query(Criteria.where("associateWords")
                    .regex(".*?\\"+dto.getSearchWords()+".*"));
        query.limit(dto.getPageSize());
        List<ApAssociateWords> apAssociateWords = template.find(query, ApAssociateWords.class);
        return ResponseResult.okResult(apAssociateWords);
    }
}
